It's the first case of several marriage equality challenges expected to be filed with the nation's highest court.
The decision is being hailed by activists as a major milestone in the fight for marriage nationwide.
Sen. Orrin Hatch, a conservative Republican from Utah, says anyone who doesn't believe marriage equality will soon be the law of the land 'just isn't living in the real world.'
In a news conference, Gov. Gary Herbert expresses displeasure with officials in other states who won't defend bans on same-sex marriage, and he comes close to saying being gay is a choice.
A federal judge orders the state to recognize the unions of those same-sex couples who married in the brief period when such marriages were legal -- but the state will have a chance to appeal.
The fight over marriage equality has immediate consequences for families in Utah.
The office of Utah's attorney general filed emergency petitions this week to block the adoptions of children by same-sex couples like Kimberly and Amber Leary.
After a three-judge panel heard arguments in the federal case challenging Utah's ban on marriage equality this morning, court observers expect the ruling to come down in favor of the freedom to marry.